chore(findings): big-bang/backstage

Summary

big-bang/backstage has 6 new findings discovered during continuous monitoring.

Layer: opensource/nodejs/nodejs20:20.19.3-slim is EOL, please update if possible

More information can be found in the VAT located here: https://vat.dso.mil/vat/image?imageName=big-bang/backstage&tag=1.0.10&branch=master

EPSS (Exploit Prediction Scoring System) provides an estimate of the likelihood that a vulnerability will be exploited in the wild.

KEV (Known Exploited Vulnerabilities) indicates whether a vulnerability is actively being exploited according to CISA.

id	source	severity	package	impact	workaround	epss_score	kev
CVE-2025-9288	Twistlock CVE	Critical	sha.js-2.4.11	See above.	Check the types of the input before passing it in to the hashing function.	0.00094	false
CVE-2025-55285	Twistlock CVE	Low	@backstage/plugin-scaffolder-backend-2.0.0			0.00027	false
CVE-2025-54798	Twistlock CVE	Low	tmp-0.2.3			0.00021	false
GHSA-95m3-7q98-8xr5	Anchore CVE	Critical	sha.js-2.4.11			N/A	N/A
GHSA-52f5-9888-hmc6	Anchore CVE	Low	tmp-0.2.3			N/A	N/A
GHSA-3x3q-ghcp-whf7	Anchore CVE	Low	@backstage/plugin-scaffolder-backend-2.0.0			N/A	N/A

More information can be found in the VAT located here: https://vat.dso.mil/vat/image?imageName=big-bang/backstage&tag=1.0.10&branch=master

Tasks

Contributor:

• Provide justifications for findings in the VAT (docs)
• Apply the StatusVerification label to this issue and wait for feedback

Iron Bank:

• Review findings and justifications

Note: If the above process is rejected for any reason, the Verification label will be removed and the issue will be sent back to Open. Any comments will be listed in this issue for you to address. Once they have been addressed, you must re-add the Verification label.

Questions?

Contact the Iron Bank team by commenting on this issue with your questions or concerns. If you do not receive a response, add /cc @ironbank-notifications/onboarding.

Additionally, Iron Bank hosts an AMA working session every Wednesday from 1630-1730EST to answer questions.